Gaya APA
Lumbantobing, D.
(2016).
HKBP do HKBP HKBP is HKBP
.
Jakarta:
PT BPK Gunung Mulia.
Gaya MLA
Lumbantobing, Darwin.
"HKBP do HKBP HKBP is HKBP".
Jakarta:
PT BPK Gunung Mulia,
2016.
Text.